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Development Of Iowa Dot Combination Bridge Separation Barrier With Bicycle Railing, Chaz M. Ginger 2018 University of Nebraska-Lincoln

Development Of Iowa Dot Combination Bridge Separation Barrier With Bicycle Railing, Chaz M. Ginger

Engineering Mechanics Dissertations & Theses

The Iowa Department of Transportation typically builds separation barriers between vehicle and pedestrian/bicycle facilities when sidewalks or trails are present on vehicular bridges. Currently, Iowa DOT employs a combination bridge rail that utilizes a concrete parapet that previously had been successfully evaluated to National Cooperative Highway Research Program (NCHRP) Report 350 Test Level 4 (TL-4) criteria for these situations. While the parapet had been successfully evaluated, the combination bridge rail system as a whole had not been evaluated to any crash test standards. Iowa DOT desired that researchers at Midwest Roadside Safety Facility (MwRSF) design and test a combination ...


Robust Railroad Cable Detection In Rural Areas From Mls Point Clouds, Máté Cserép, Péter Hudoba, Zoltán Vincellér 2018 Eötvös Loránd University, Hungary

Robust Railroad Cable Detection In Rural Areas From Mls Point Clouds, Máté Cserép, Péter Hudoba, Zoltán Vincellér

Free and Open Source Software for Geospatial (FOSS4G) Conference Proceedings

Monitoring of the railroad infrastructure is crucial for safety concerns and accident prevention. This task requires regular surveillance which is nowadays still carried out by expensive and time consuming manual visual inspections in many countries. The problem of railroad cable recognition (contact cables, catenary cables, return current cables) in rural areas based on LiDAR point clouds has it own methods, but current state of the art solutions suffer from extremely high computational load due the extensive size of the datasets. In this study we analyzed and compared novel robust solutions focusing on minimizing the assumptions (positions and distances of track ...


Otta Seal Construction For Asphalt Pavement Resurfacing, Sharif Y. Gushgari, Yang Zhang, Ali Nahvi, Halil Ceylan, Sunghwan Kim 2018 Iowa State University

Otta Seal Construction For Asphalt Pavement Resurfacing, Sharif Y. Gushgari, Yang Zhang, Ali Nahvi, Halil Ceylan, Sunghwan Kim

Civil, Construction and Environmental Engineering Conference Presentations and Proceedings

Otta seal resurfacing methods have been widely demonstrated for unpaved roads and road rehabilitation in a few states in the U.S. as well as in Scandinavia and Africa. Application of Otta seal over a deteriorated hot mix asphalt (HMA) surface has been considered as the feasible concept that has not been applied for real construction. In this study, a double-layer Otta seal construction over HMA surface was monitored. The applied materials for the construction were introduced. The following performance of the constructed Otta seal layers was evaluated by measuring the international roughness index (IRI) and dust. The road IRI ...


Hydronic Heated Pavement System Using Precast Concrete Pavement For Airport Applications, Hesham Abdualla, Halil Ceylan, Sunghwan Kim, Peter C. Taylor, Kasthurirangan Gopalakrishnan, Kristen Cetin 2018 Iowa State University

Hydronic Heated Pavement System Using Precast Concrete Pavement For Airport Applications, Hesham Abdualla, Halil Ceylan, Sunghwan Kim, Peter C. Taylor, Kasthurirangan Gopalakrishnan, Kristen Cetin

Civil, Construction and Environmental Engineering Conference Presentations and Proceedings

The use of deicing chemical has the potential to cause environmental and safety concerns and pavement deterioration. Hydronic heated pavement systems (HHPS) have been widely used to melt or prevent ice and snow accumulation on paved surfaces. HHPS uses heated fluid circulated through pipes embedded in the concrete pavement to warm the surface of the concrete. The objective of this study is to develop a conceptual design framework and construction guidance for large-scale HHPS using precast concrete pavement (PCP) technology to expedite construction work and minimize air travel disruption. The detailed design and 3-D visualization of construction procedures has been ...


Development Of Artificial Neural Networks Based Predictive Models For Dynamic Modulus Of Airfield Pavement Asphalt Mixtures, Orhan Kaya, Navneet Garg, Halil Ceylan, Sunghwan Kim 2018 Iowa State University

Development Of Artificial Neural Networks Based Predictive Models For Dynamic Modulus Of Airfield Pavement Asphalt Mixtures, Orhan Kaya, Navneet Garg, Halil Ceylan, Sunghwan Kim

Civil, Construction and Environmental Engineering Conference Presentations and Proceedings

As part of asphalt mix design for flexible airfield pavements, the Federal Aviation Administration (FAA) collects asphalt volumetric mixture properties and aggregate gradations. Binder properties as well as laboratory dynamic modulus |E*| measurements for asphalt mixes are performed for flexible airfield pavements research. An artificial neural networks (ANN) model was developed using collected volumetric properties, aggregate gradation, and binder properties as well as laboratory |E*| measurements from seven hot-mix asphalt (HMA) and warm mix asphalt (WMA) mixtures. ANN model predictions were compared with the modified Witczak predictive model calculations for the same mixtures, and it was found that the developed ...


Implementing Advanced Wireless Sensing System For Airfield Pavement Condition Monitoring, Shuo Yang, Halil Ceylan, Sunghwan Kim, Hesham Abdulla 2018 Iowa State University

Implementing Advanced Wireless Sensing System For Airfield Pavement Condition Monitoring, Shuo Yang, Halil Ceylan, Sunghwan Kim, Hesham Abdulla

Civil, Construction and Environmental Engineering Conference Presentations and Proceedings

Real-time monitoring of pavement conditions is beneficial not only to more accurate predictions of airport pavement performance but also to more efficient pavement management activities. Although wireless-based sensing system have shown some advantages compared to wired sensing system, there are just few studies that describe instrumenting wireless sensors in the field for pavement condition monitoring. To bridge this gap, this paper presents case studies describing use of advanced wireless sensing system for airport pavement conditions monitoring at three test sites: the Des Moines International Airport (DSM), the Ohio State University (OSU) Airport, and the Texas A&M University (TAMU) Airport ...


Understanding Transit System Performance Using Avl-Apc Data: An Analytics Platform With Case Studies For The Pittsburgh Region, Xidong Pi, Mark Egge, Jackson Whitmore, Amy Silbermann, Zhen Sean Qian 2018 Carnegie Mellon University

Understanding Transit System Performance Using Avl-Apc Data: An Analytics Platform With Case Studies For The Pittsburgh Region, Xidong Pi, Mark Egge, Jackson Whitmore, Amy Silbermann, Zhen Sean Qian

Journal of Public Transportation

This paper introduces a novel transit data analytics platform for public transit planning, assessing service quality and revealing service problems in high spatiotemporal resolution for public transit systems based on Automatic Passenger Counting (APC) and Automatic Vehicle Location (AVL) technologies. The platform offers a systematic way for users and decision makers to understand system performance from many aspects of service quality, including passenger waiting time, stop-skipping frequency, bus bunching level, bus travel time, on-time performance, and bus fullness. The AVL-APC data from September 2012 to March 2016 were archived in a database to support the development of a user-friendly web ...


Impact Of Pavement Surface Condition On Roadway Departure Crash Risk In Iowa, Ahmad Alhasan, Inya Nlenanya, Omar G. Smadi, Cameron A. MacKenzie 2018 Iowa State University

Impact Of Pavement Surface Condition On Roadway Departure Crash Risk In Iowa, Ahmad Alhasan, Inya Nlenanya, Omar G. Smadi, Cameron A. Mackenzie

Industrial and Manufacturing Systems Engineering Publications

Safety performance is a crucial component of highway network performance evaluation. Besides their devastating impact on roadway users, traffic crashes lead to substantial economic losses on both personal and societal levels. Due to the complexity of crash events and the unique conditions in each country and state, empirical local calibration for the correlation between attributes of interest and the safety performance is always recommended. Limited studies have established a procedure to analyze the impact of pavement condition on traffic safety in a risk analysis scheme. This study presents a thorough analysis of some roadway departure crashes which occurred in Iowa ...


Webinar: Firsthand Data Collection: Students Get Behind The Wheel Of Vehicle Dynamics, Roger Lindgren, Jordan Preston 2018 Oregon Institute of Technology

Webinar: Firsthand Data Collection: Students Get Behind The Wheel Of Vehicle Dynamics, Roger Lindgren, Jordan Preston

TREC Webinar Series

Vehicle operating dynamics data have a fundamental impact on the design of roadways, but collecting this type of data is not part of your typical college curriculum. Instead, engineering students are handed a textbook, leaving them without a firsthand experience of how accelerations and decelerations “feel” to the driver, the ultimate consumer of their designs. Seeking to change this norm, Roger Lindgren and C.J. Riley, civil engineering professors at the Oregon Institute of Technology, undertook a NITC education project to incorporate more real-world data collection and analysis into transportation courses. This webinar will offer a detailed look at the ...


Assessment Of The Potential Of Proposed Stations Of The California High-Speed Rail As Major Hubs For Physical And Economic Development, Seitu Akira Coleman 2018 California Polytechnic State University, San Luis Obispo

Assessment Of The Potential Of Proposed Stations Of The California High-Speed Rail As Major Hubs For Physical And Economic Development, Seitu Akira Coleman

Master's Theses and Project Reports

This study investigated the potential for development of station catchment areas around the proposed California High-Speed Rail System. The study was prompted by a review of practices of Japanese railway company groups that engage not only in train operations, but also in business diversification and property development within the station areas of their lines. These actions allow the company groups to diversify their revenues streams, increase ridership on their lines, and operate as a whole with net profits. This is in contrast to transit agencies in the United States, which only focus on transporting passengers along their lines and do ...


Diesel Particulate Generation, Matthew Ferdenzi 2018 Union College

Diesel Particulate Generation, Matthew Ferdenzi

Honors Theses

The goal of this project is to design a diesel particulate generator to test aerogels as diesel particulate filters. Diesel particulate generators are machines that generate diesel particulate matter, or diesel soot. Diesel particulate filters have been recently put into the market to help many car companies meet the ever-changing diesel emission regulations set by the EPA and other international agencies. The main goal of the filter is to block soot from exiting to the environment. Once the filter is full, the soot is oxidized and released. The problem with these filters is that they are large, costly, detrimental to ...


Development Of Carbon Fiber-Modified Electrically Conductive Concrete For Implementation In Des Moines International Airport, Alireza Sassani, Halil Ceylan, Sunghwan Kim, Ali Arabzadeh, Peter C. Taylor, Kasthurirangan Gopalakrishnan 2018 Iowa State University

Development Of Carbon Fiber-Modified Electrically Conductive Concrete For Implementation In Des Moines International Airport, Alireza Sassani, Halil Ceylan, Sunghwan Kim, Ali Arabzadeh, Peter C. Taylor, Kasthurirangan Gopalakrishnan

Civil, Construction and Environmental Engineering Publications

This paper reports on the procedures of mix design preparation, production, placement, and performance evaluation of the first electrically conductive concrete (ECON) heated-pavement system (HPS) implemented at a U.S. airport. While ECON has drawn considerable attention as a paving material for multi-functional pavements, including HPS, the majority of ECON HPS applications and studies have been limited to laboratory scale or include materials/methods that do not conform to regulations enforced by airfield construction practices. Carbon fiber-reinforced ECON provides a promising prospective for application in airfield pavements. In this study, ECON mixtures were prepared in the laboratory using varying cementitious ...


Technology, Civic Engagement And Street Science: Hacking The Future Of Participatory Street Design In The Era Of Self-Driving Cars., William W. Riggs 2018 California Polytechnic State University - San Luis Obispo

Technology, Civic Engagement And Street Science: Hacking The Future Of Participatory Street Design In The Era Of Self-Driving Cars., William W. Riggs

William W. Riggs

Emerging technologies are fundamentally changing how we plan, develop, and manage our cities. Given trends of increasing mobile use, local governments are being required to adopt and use new technologies to plan, communicate and engage with citizens. In this context, this study then hypothesizes how technology trends will continue to impact planning and local government using the case of the participatory planning application ReStreet.comapp.restreet.com), a tool for visioning the future of streets in a future of autonomous or self-driving vehicles. While other work has detailed the importance of technology in the participatory process, this tool provides an ...


A Survey Of Ride-Hailing Passengers, Steven Gehrke 2018 Boston Metropolitan Area Planning Council

A Survey Of Ride-Hailing Passengers, Steven Gehrke

TREC Friday Seminar Series

In less than a decade, the ride-hailing industry, led by Uber and Lyft, has dramatically transformed the way we travel in our metro regions. Rider adoption of these on-demand mobility services has proceeded much quicker than our understanding of their impacts to our urban transportation systems. Planning for this transformation in personal mobility, which will have unintended consequences, has been made more difficult by the scarcity in meaningful data made available by these ride-hailing companies. Public agencies responsible for managing congestion and transit services are hindered in their ability to successfully plan for the integration of this emergent travel mode ...


Planning Of Fast-Charging Stations For A Battery Electric Bus System Under Energy Consumption Uncertainty, Zhaocai Liu, Ziqi Song, Yi He 2018 Utah State University

Planning Of Fast-Charging Stations For A Battery Electric Bus System Under Energy Consumption Uncertainty, Zhaocai Liu, Ziqi Song, Yi He

Civil and Environmental Engineering Faculty Publications

Battery-powered electric buses are gaining popularity as an energy-efficient and emission-free alternative for bus fleets. However, battery electric buses continue to struggle with concerns related to their limited driving range and time-consuming recharging processes. Fast-charging technology, which utilizes dwelling time at bus stops or terminals to recharge buses in operation employing high power, can raise battery electric buses to the same level of capability as their diesel counterparts in terms of driving range and operating time. To develop an economical and effective battery electric bus system using fastcharging technology, fast-charging stations must be strategically deployed. Moreover, due to the instability ...


Making Strides: State Of The Practice Of Pedestrian Forecasting In Regional Travel Models, Patrick A. Singleton, Joseph C. Totten, Jaime P. Orrego-Oñate, Robert J. Schneider, Kelly J. Clifton 2018 Utah State University

Making Strides: State Of The Practice Of Pedestrian Forecasting In Regional Travel Models, Patrick A. Singleton, Joseph C. Totten, Jaime P. Orrego-Oñate, Robert J. Schneider, Kelly J. Clifton

Civil and Environmental Engineering Faculty Publications

Much has changed in the 30 years since non-motorized modes were first included in regional travel demand models. As interest in understanding behavioral influences on walking and policies requiring estimates of walking activity increase, it is important to consider how pedestrian travel is modeled at a regional level. This paper evaluates the state of the practice of modeling walk trips among the largest 48 metropolitan planning organizations (MPOs) and assesses changes made over the last 5 years. By reviewing model documentation and responses to a survey of MPO modelers, this paper summarizes current practices, describes six pedestrian modeling frameworks, and ...


Achieving Public Health And Climate Change Goals: What Do We Need To Know About The Transportation System?, Mohammad Tayarani 2018 University of New Mexico

Achieving Public Health And Climate Change Goals: What Do We Need To Know About The Transportation System?, Mohammad Tayarani

Civil Engineering ETDs

The overall aim of this dissertation is evaluating what new knowledge can be gained about the environmental and public health outcomes of regional transportation planning strategies by implementing a suite of more spatially and temporally detailed transportation and air quality models. This new knowledge can be used to better understand the potential health effects of emissions exposure while also guiding the development of new transportation and land-use plans, and related policies that have the potential to achieve large reductions in pollution exposure and green house gas emissions at local and regional level.


City Of Tyler Hub-And-Spoke Bicycle Lane Network, Pedro A. Zavagna 2018 University of Texas at Tyler

City Of Tyler Hub-And-Spoke Bicycle Lane Network, Pedro A. Zavagna

Civil Engineering Theses

The purpose of this study is to showcase the up-to-date development of a Bicycle Lane Engineered Scoring System (BLESS) that will be utilized to map and identify the optimum feasible locations for bicycle lanes. The project was initiated for the City of Tyler, Texas where a Hub-and-Spoke bicycle lane will be designed around the city utilizing the BLESS. The design process is comprised of attentive planning, progressive development and a collective effort by the transportation engineering research team at the University of Texas at Tyler to design an exceptional bicycle lane network. The BLESS consisted of traffic analysis, lane configuration ...


Utah Salt Storage Facilities Guidelines And Best Management Practices, Weston Bellon 2018 Utah State University

Utah Salt Storage Facilities Guidelines And Best Management Practices, Weston Bellon

All Graduate Plan B and other Reports

An environmental analysis was conducted at the Utah Water Research Laboratory of samples gathered from Utah Department of Transportation (UDOT) salt storage facilities retention ponds across the state. The analysis indicated high levels of TSS largely made up of minerals directly associated with the deicing solution currently used by UDOT in roadway applications. As a companion to that analysis, best management practices have been identified and compiled to provide a resource for the proper management of salt storage facilities in the state of Utah. Topics included as best management practices include locating new storage facilities, proper salt storage, proper salt ...


Analysis Of The Contribution Of Transportation And Land Use To Citizen Perceptions Of Livability, Rebecca Lewis 2018 University of Oregon

Analysis Of The Contribution Of Transportation And Land Use To Citizen Perceptions Of Livability, Rebecca Lewis

TREC Friday Seminar Series

What is livability? How does the built environment influence resident perceptions of livability? Although livability is a broadly used term and a key goal in land use and transportation plans at the state level, it is unclear whether residents think their neighborhoods are livable and what contributes to their perception of livability. The purpose of the project was to understand how Oregonians, in neighborhoods of varying densities and within Metropolitan Planning Organizations (MPOs), perceive livability at the nexus of transportation and land use. We sought to understand how residents define and perceive livability in three different MPOs in the state ...


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